/**
 * `agentsmarket skill call <slug>` — wraps the existing callCommand.
 *
 * Calls a skill via the marketplace server. Handles EIP-191 signing + USDC payment.
 * For v0.5 B2, this is a thin pass-through to the top-level call logic.
 * R16 will replace this with a server-side /invoke call + payment flow.
 */
export declare function skillCallCommand(slug: string, opts: {
    paymentTxHash?: string;
    inputs?: string;
    autoSign?: boolean;
}): Promise<void>;